Oils!!!!??!?!?!?!?!
Now, if you want to do some homework, you might want to visit the Oil Section here on the forum. If you you look close at the VOA's (virgin oil analysis) for the different oils, you'll find that there are only very minor (almost insignificant) differences between regular Mobil-1 and Mobil-1 V-Twin when used in the motor. For the most part it's nothing more than a Minor tweak in the formulation, a different label, and sold at twice the price. Ever heard the phrase "marketing gimmick"?
Many "old-timers" here have been running the regular automotive Mobil-1 15w-50 for years, and on bikes with over 100K problem free miles.
Now the good part. You can get the Mobil-1 15w-50 at Walmart in a 5 quart jug for $22.00. That's $4.40/qt.
For the primary/tranny, get a quart of Mobil-1 75-90 GEAR Oil. Autozone carries it for about $9.00.
In Big Twins the engine, tranny and primary each have their own fill.
Last edited by OldFenderGuy; Mar 16, 2010 at 05:38 PM.




